ANKARA, Jan 15 (Reuters) - President Tayyip Erdogan said on Tuesday he had discussed a safe zone which Turkey would set up in Syria, during a phone call with U.S. President Donald Trump which he described as positive.

Monday's call came after Trump, who has announced a U.S. troop withdrawal from northeast Syria, threatened Turkey with economic devastation if Turkish forces attacked a U.S.-backed Kurdish militia there. (Reporting by Ezgi Erkoyun and Ali Kucukgocmen; Writing by Sarah Dadouch Editing by Dominic Evans)